<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link rel="stylesheet" href="./基础样式.css">
    <style>
        div {
            width: 100px;
            height: 100px;
            background-color: red;
            border: 1px solid #000;
            margin: auto;
            margin-top: 20px;
        }

        #box {
            width: 200px;
            height: 200px;
            background-color: blue;
        }

        .box {
            background-color: pink;
            border: none;
        }

        .box1 {
            width: 265px;
            height: 265px;
            background-image: url(./imge/OIP-C.webp);

        }

        p {
            
        }
    </style>
</head>

<body>
    <div>哈哈哈哈哈哈哈哈哈</div>
    <!--ID选择器唯一的-->
    <div id="box">ID选择器</div>
    <div class="box"></div>
    <div class="box1"></div>
    <p>我是一个段落标签，哈哈哈哈哈哈哈</p>
</body>

</html>